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fzus63 kmqt 031500
glfls 
expires:202403032300;;329646

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun mar 3 2024

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...a 29.2 inch low pressure over eastern south dakota will 
lift north, reaching far southern manitoba this evening. an 
associated 29.4 inch trough will approach lake superior late this 
afternoon. this trough will weaken to 29.9 inches as it moves east 
tonight, stalling over far eastern lake superior by monday morning. 
meanwhile, the low over southern manitoba this evening will weaken 
to 29.6 inches as it moves to far northern ontario during monday 
afternoon. as the low and trough shift east monday night, 30.4 inch 
high pressure will build southeast across saskatchewan into north 
dakota. as this high then builds to 30.6 inches while drifting east 
to northern ontario for wednesday, a 29.8 inch low pressure will 
develop over the dakotas. on thursday, the high will build further 
to 30.7 inches as it moves to quebec. meanwhile, the low over the 
dakotas on wednesday will weaken to 29.9 inches as it lifts along 
the manitoba-ontario border during thursday.


lsz162-032300-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1000 am est sun mar 3 2024 /900 am cst sun mar 3 2024/

.rest of today...east winds to 30 knots with a few gale force
gusts to 35 knots possible. a slight chance of rain. waves 4 to
8 feet occasionally to 10 feet building to 6 to 9 feet 
occasionally to 11 feet. 
.tonight...southwest winds 15 to 25 knots diminishing to 10 to
20 knots late. a chance of rain showers in the evening. waves
subsiding to 3 to 5 feet occasionally to 7 feet. 
.monday...southwest winds 10 to 20 knots veering west by late
morning, then backing southwest by mid afternoon. a slight chance
of rain. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.monday night...west winds 10 to 20 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...northwest winds 10 to 20 knots backing west in the
afternoon. waves calm to 2 feet. 
.tuesday night...northwest winds 10 to 20 knots veering north
after midnight. waves calm to 2 feet. 
.wednesday...northeast winds 10 to 20 knots becoming east 15 to
25 knots. waves building to 1 to 3 feet. 
.thursday...east winds 10 to 20 knots. a chance of rain showers,
possibly mixed with snow. waves 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$
fzus63 kmqt 031500
glfls 
expires:202403032300;;329647

open lake forecast for lake superior
national weather service marquette mi
1000 am est sun mar 3 2024

for waters beyond 5 nautical miles of shore on lake superior.

waves are the significant wave height - the average of the
highest 1/3 of the wave spectrum. occasional wave height is the
average of the highest 1/10 of the wave spectrum.

.synopsis...a 29.2 inch low pressure over eastern south dakota will 
lift north, reaching far southern manitoba this evening. an 
associated 29.4 inch trough will approach lake superior late this 
afternoon. this trough will weaken to 29.9 inches as it moves east 
tonight, stalling over far eastern lake superior by monday morning. 
meanwhile, the low over southern manitoba this evening will weaken 
to 29.6 inches as it moves to far northern ontario during monday 
afternoon. as the low and trough shift east monday night, 30.4 inch 
high pressure will build southeast across saskatchewan into north 
dakota. as this high then builds to 30.6 inches while drifting east 
to northern ontario for wednesday, a 29.8 inch low pressure will 
develop over the dakotas. on thursday, the high will build further 
to 30.7 inches as it moves to quebec. meanwhile, the low over the 
dakotas on wednesday will weaken to 29.9 inches as it lifts along 
the manitoba-ontario border during thursday.


lsz263-032300-
lake superior from saxon harbor wi to upper entrance to portage
canal mi 5nm off shore to the us/canadian border including isle
royale national park-
1000 am est sun mar 3 2024

.rest of today...east winds 20 to 30 knots increasing to 30 knots
with a few gale force gusts to 35 knots possible. a slight chance
of rain. waves 6 to 9 feet occasionally to 11 feet building to
10 to 14 feet occasionally to 18 feet. 
.tonight...southeast winds to 30 knots with a few gale force
gusts to 35 knots possible becoming southwest 20 to 30 knots by
midnight, then diminishing to 10 to 20 knots late. a chance of
rain showers in the evening. waves subsiding to 3 to 6 feet
occasionally to 8 feet. 
.monday...southwest winds 10 to 20 knots veering west. a chance
of rain. waves subsiding to 2 to 4 feet, then building to 3 to
5 feet occasionally to 7 feet. 
.monday night...west winds 5 to 15 knots veering northwest after
midnight. waves subsiding to calm to 2 feet. 
.tuesday...north winds 5 to 15 knots becoming west 10 to 20 knots
in the afternoon. waves building to 1 to 3 feet. 
.tuesday night...northwest winds 5 to 15 knots becoming north
10 to 20 knots after midnight. waves 1 to 3 feet. 
.wednesday...northeast winds 10 to 20 knots veering east. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.thursday...east winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 

note, wave height forecasts are for ice free areas.

$$
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